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Influence of the QAS Nature and Size of a Doubly Charged Hydrophilic Inorganic iIons on the Analytical Characteristics of S4O62−, SO42−, SO32−, S2−, S2O32− Selective Electrodes

Influence of the QAS Nature and Size of a Doubly Charged Hydrophilic Inorganic iIons on the... AbstractThe effect of higher quaternary ammonium salts’ (QAS) exchange center steric accessibility and doubly charged hydrophilic inorganic ions size on the analytical characteristics of S4O62−, SO42−, SO32−, S2−, S2O32− ion selective electrodes (ISEs) was studied. It has been established that for SO42−, SO32−, S2−, S2O32− - SE with the improvement of the exchange center steric accessibility in the series TNODA - TB - TE - TM - BHPBTM - (oxyethyl)2TM - (oxyethyl)3TM - (oxyethyl)4TM the selectivity coefficients lgKPot (i, j) decrease significantly. The LDL reducing magnitude and selectivity improvement depends from doubly charged anion size and decreases in series S2− -SO32−-SO42− -S2O32− ions. The maximum effects are achieved for the smallest S2− ion. For S4O62− -SE an inverse relationship is found, i.e. as the steric availability decrease in the QAS series (oxyethyl)4TM -(oxyethyl)3TM - (oxyethyl)2TM - BHPBTM - TM - TE - TB - TNODA - TOD a certain improvement in analytical characteristics is observed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Analytical Chemistry Letters Taylor & Francis

Influence of the QAS Nature and Size of a Doubly Charged Hydrophilic Inorganic iIons on the Analytical Characteristics of S4O62−, SO42−, SO32−, S2−, S2O32− Selective Electrodes

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Influence of the QAS Nature and Size of a Doubly Charged Hydrophilic Inorganic iIons on the Analytical Characteristics of S4O62−, SO42−, SO32−, S2−, S2O32− Selective Electrodes

Abstract

AbstractThe effect of higher quaternary ammonium salts’ (QAS) exchange center steric accessibility and doubly charged hydrophilic inorganic ions size on the analytical characteristics of S4O62−, SO42−, SO32−, S2−, S2O32− ion selective electrodes (ISEs) was studied. It has been established that for SO42−, SO32−, S2−, S2O32− - SE with the improvement of the exchange center steric accessibility in the series TNODA - TB - TE - TM -...
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Publisher
Taylor & Francis
Copyright
© 2017 Har Krishan Bhalla & Sons
ISSN
2230-7532
eISSN
2229-7928
DOI
10.1080/22297928.2017.1395296
Publisher site
See Article on Publisher Site

Abstract

AbstractThe effect of higher quaternary ammonium salts’ (QAS) exchange center steric accessibility and doubly charged hydrophilic inorganic ions size on the analytical characteristics of S4O62−, SO42−, SO32−, S2−, S2O32− ion selective electrodes (ISEs) was studied. It has been established that for SO42−, SO32−, S2−, S2O32− - SE with the improvement of the exchange center steric accessibility in the series TNODA - TB - TE - TM - BHPBTM - (oxyethyl)2TM - (oxyethyl)3TM - (oxyethyl)4TM the selectivity coefficients lgKPot (i, j) decrease significantly. The LDL reducing magnitude and selectivity improvement depends from doubly charged anion size and decreases in series S2− -SO32−-SO42− -S2O32− ions. The maximum effects are achieved for the smallest S2− ion. For S4O62− -SE an inverse relationship is found, i.e. as the steric availability decrease in the QAS series (oxyethyl)4TM -(oxyethyl)3TM - (oxyethyl)2TM - BHPBTM - TM - TE - TB - TNODA - TOD a certain improvement in analytical characteristics is observed.

Journal

Analytical Chemistry Letters – Taylor & Francis

Published: Sep 3, 2017

Keywords: Ionometry; ion size; quaternary ammonium salt

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